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		基于ESA-LUC和MODIS-NDVI的西北干旱荒漠-绿洲体系分类阈值及应用
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			Division and application of desert-oasis system in arid Northwest China based on ESA-LUC and MODIS-NDVI
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| 图1. 西北干旱区地理位置及相关要素空间分布 | 
| Fig.1. Location map of the arid northwestern China combined with spatial distributions of various factors (A.location map; B. spatial pattern of mountain-plain systems; C. ESP-LUC; D. MODIS-NDVI; E. air temperature; F. precipitation) | 
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